I have a neck condition which I have to get corrected monthly at my chiropractor. Consequently, I find it much more combfortable and easier on my neck if I ride in an up-right position. I am looking for some handlebars / riser bars that are at least 12 inches deep (?) off the stem. They should be MTN bike style. I tried bmx already and was told they are dangerous because they dont fit the stem properly. I also prefer if the have as much space for mounting computer, grips as possible. I already have a long stem. Does any body have any suggestions where I could buy these kind of handle bars and who would manufacture them?